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Science (English Medium) इयत्ता १२ - CBSE Question Bank Solutions for Mathematics

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Mathematics
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Examine the consistency of the system of equations.

x + 2y = 2

2x + 3y = 3

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Examine the consistency of the system of equations.

2x − y = 5

x + y = 4

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

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Examine the consistency of the system of equations.

x + 3y = 5

2x + 6y = 8

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Examine the consistency of the system of equations.

x + y + z = 1

2x + 3y + 2z = 2

ax + ay + 2az = 4

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Examine the consistency of the system of equations.

3x − y − 2z = 2

2y − z = −1

3x − 5y = 3

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Examine the consistency of the system of equations.

5x − y + 4z = 5

2x + 3y + 5z = 2

5x − 2y + 6z = −1

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

5x + 2y = 4

7x + 3y = 5

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

2x – y = –2

3x + 4y = 3

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

4x – 3y = 3

3x – 5y = 7

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

5x + 2y = 3

3x + 2y = 5

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

2x + y + z = 1

x – 2y – z = `3/2`

3y – 5z = 9

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

x − y + z = 4

2x + y − 3z = 0

x + y + z = 2

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

2x + 3y + 3z = 5

x − 2y + z = −4

3x − y − 2z = 3

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of linear equations using the matrix method.

x − y + 2z = 7

3x + 4y − 5z = −5

2x − y + 3z = 12

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

If A = `[(2,-3,5),(3,2,-4),(1,1,-2)]` find A−1. Using A−1 solve the system of equations:

2x – 3y + 5z = 11

3x + 2y – 4z = –5

x + y – 2z = –3

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

The cost of 4 kg onion, 3 kg wheat and 2 kg rice is Rs. 60. The cost of 2 kg onion, 4 kg wheat and 6 kg rice is Rs. 90. The cost of 6 kg onion 2 kg wheat and 3 kg rice is Rs. 70. Find the cost of each item per kg by matrix method.

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the system of the following equations:

`2/x+3/y+10/z = 4`

`4/x-6/y + 5/z = 1`

`6/x + 9/y - 20/x = 2`

[4] Determinants
Chapter: [4] Determinants
Concept: undefined >> undefined

Solve the following Linear Programming Problems graphically:

Maximise Z = 3x + 4y

subject to the constraints : x + y ≤ 4, x ≥ 0, y ≥ 0.

[12] Linear Programming
Chapter: [12] Linear Programming
Concept: undefined >> undefined

Solve the following Linear Programming Problems graphically:

Minimise Z = – 3x + 4 y

subject to x + 2y ≤ 8, 3x + 2y ≤ 12, x ≥ 0, y ≥ 0.

[12] Linear Programming
Chapter: [12] Linear Programming
Concept: undefined >> undefined

Solve the following Linear Programming Problems graphically:

Maximise Z = 5x + 3y

subject to 3x + 5y ≤ 15, 5x + 2y ≤ 10, x ≥ 0, y ≥ 0

[12] Linear Programming
Chapter: [12] Linear Programming
Concept: undefined >> undefined
< prev  3041 to 3060 of 7939  next > 
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